diff --git a/message/messages.php b/message/messages.php
index 678b075cfe0..ca52aa89a37 100644
--- a/message/messages.php
+++ b/message/messages.php
@@ -1,2 +1,2 @@
 <html>
-<body>
+<body class="message course-1" id="message-messages">
diff --git a/message/refresh.php b/message/refresh.php
index c00e9913974..c25c1a16ab8 100644
--- a/message/refresh.php
+++ b/message/refresh.php
@@ -40,7 +40,7 @@
     echo '  parent.messages.document.write("<meta http-equiv=\"content-type\" content=\"text/html; charset='.get_string('thischarset').'\" />");'."\n";
     echo '  parent.messages.document.write("<base target=\"_blank\" />");'."\n";
     echo '  parent.messages.document.write("'.addslashes($stylesheetshtml).'");'."\n";
-    echo '  parent.messages.document.write("<\/head><body class=\"message course-1\" id=\"message-user\"><div style=\"display: none\" id=\"messagestarted\">&nbsp;<\/div>");'."\n";
+    echo '  parent.messages.document.write("<\/head><body class=\"message course-1\" id=\"message-messages\"><div style=\"display: none\" id=\"messagestarted\">&nbsp;<\/div>");'."\n";
     echo '}'."\n";
 
     @ob_implicit_flush(true);
